第二岛链 dì'èrdǎoliàn Second Island Chain Definitions Defs Origin Strokes Stroke Words Sentences Sents 第二 dì'èr numeral second the second in a series; number two; next岛链 島鏈 dǎoliàn noun island chain A chain or string of islands geographically arranged in a line; specifically used in military strategy to describe defensive or offensive maritime perimeters.